5
Design (cont) C 4 F 10 chosen for its high index-of-refraction Try to re-use as much of the current detector as possible to control costs and unknowns – Re-use optics from present cerenkov. – Can the present box be re-used? What modifications are necessary? Finite element analysis by Ravi Anumagalla

6
Model 4: No top and Bottom faces, includes a C Channel on one face Max Stress : 263 ksi Max Deflection : 1.59 inches Boundary Conditions: Pressure on all faces (14.7 psi), Fixed at the bottom and top surface,

7
Model 4: Plot shows surfaces where stresses are in the range of 0-23 ksi

11
Common features PMT sealed against interior for servicing while the chamber is pressurized. Simple stationary gas system since it will be filled from the Hall B gas system. Size is compatible with current short cerenkov. Low-number of knock-on electrons for 0.4mm Ti window (<2%).